Financial Information By Industry Segment And Geographic Area (Information By Industry Segment, (Depreciation, Amortization And Cost of Timber Harvested) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1]	$ 1,343	$ 1,124	$ 1,167
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1]	781	730	739
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1]	261	108	73
Operating Segments [Member] | Printing Papers
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1]	245	232	234
Corporate and other (c)
Segment Reporting Information [Line Items]
Depreciation and Amortization	[1],[2]	$ 56	$ 54	$ 121

[1] Excludes accelerated depreciation related to the closure and/or repurposing of mills.

[2] Includes $1 million in 2017, $2 million in 2016 and $74 million in 2015 from previously divested businesses.